/* ---------- Tokens ---------- */
:root {
  --bg: #f7f8fa;
  --bg-elev: #ffffff;
  --bg-sunk: #eef1f5;
  --text: #0f172a;
  --text-muted: #4b5563;
  --text-faint: #6b7280;
  --border: #e2e6ec;
  --accent: #0b63ce;
  --accent-soft: rgba(11, 99, 206, 0.09);
  --accent-text: #ffffff;
  --ok: #15803d;

  --term-bg: #0d1117;
  --term-bar: #161b22;
  --term-text: #c9d1d9;
  --term-prompt: #3fb950;
  --term-key: #79c0ff;
  --term-ok: #3fb950;

  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 8px 24px rgba(15, 23, 42, 0.06);
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --maxw: 1120px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b0f14;
    --bg-elev: #121820;
    --bg-sunk: #0f141b;
    --text: #e6edf3;
    --text-muted: #a3adb9;
    --text-faint: #7d8794;
    --border: #222b36;
    --accent: #5aa9ff;
    --accent-soft: rgba(90, 169, 255, 0.12);
    --accent-text: #06121f;
    --ok: #3fb950;
    --term-bg: #0a0d12;
    --term-bar: #121820;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #0b0f14;
  --bg-elev: #121820;
  --bg-sunk: #0f141b;
  --text: #e6edf3;
  --text-muted: #a3adb9;
  --text-faint: #7d8794;
  --border: #222b36;
  --accent: #5aa9ff;
  --accent-soft: rgba(90, 169, 255, 0.12);
  --accent-text: #06121f;
  --ok: #3fb950;
  --term-bg: #0a0d12;
  --term-bar: #121820;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.02em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.mono { font-family: var(--font-mono); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.skip-link {
  position: absolute; left: 16px; top: -48px;
  background: var(--accent); color: var(--accent-text);
  padding: 8px 14px; border-radius: var(--radius-sm); z-index: 100;
}
.skip-link:focus { top: 12px; }

/* Icons */
svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
svg.fill { fill: currentColor; stroke: none; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
.site-header.scrolled { border-bottom-color: var(--border); }
.nav { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { font-family: var(--font-mono); font-weight: 500; font-size: 15px; }
.brand-prompt { color: var(--accent); }
.nav-links { display: flex; gap: 4px; margin-left: auto; }
.nav-links a {
  display: block; padding: 6px 12px; border-radius: 999px;
  font-size: 14px; font-weight: 500; color: var(--text-muted);
  transition: color 0.15s, background 0.15s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--bg-sunk); }

.theme-toggle {
  display: grid; place-items: center;
  width: 36px; height: 36px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text-muted);
  cursor: pointer; transition: color 0.15s, border-color 0.15s;
}
.theme-toggle:hover { color: var(--text); border-color: var(--text-faint); }
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: block; }
}

/* ---------- Hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
  padding-top: 88px;
  padding-bottom: 96px;
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; color: var(--text-muted);
  padding: 6px 12px; border: 1px solid var(--border); border-radius: 999px; background: var(--bg-elev);
}
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 60%, transparent);
  animation: pulse 2.4s infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--ok) 50%, transparent); }
  70% { box-shadow: 0 0 0 8px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.hero h1 {
  font-size: clamp(40px, 6vw, 68px);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 20px 0 20px;
}
.lead { font-size: clamp(17px, 1.6vw, 19px); color: var(--text-muted); max-width: 40ch; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.tag-row li {
  font-size: 13px; font-weight: 500; color: var(--accent);
  background: var(--accent-soft); padding: 4px 10px; border-radius: 999px;
}
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 18px; border-radius: 10px;
  font-size: 15px; font-weight: 600;
  border: 1px solid var(--border); background: var(--bg-elev); color: var(--text);
  transition: transform 0.15s, border-color 0.15s, background 0.15s;
}
.btn:hover { border-color: var(--text-faint); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn-primary:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 88%, var(--text)); }

/* Terminal */
.terminal {
  margin: 0;
  border-radius: var(--radius);
  background: var(--term-bg);
  border: 1px solid color-mix(in srgb, var(--term-text) 12%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.terminal-bar {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 16px; background: var(--term-bar);
  border-bottom: 1px solid color-mix(in srgb, var(--term-text) 8%, transparent);
}
.terminal-bar span { width: 11px; height: 11px; border-radius: 50%; background: #3a424d; }
.terminal-bar span:nth-child(1) { background: #ff5f57; }
.terminal-bar span:nth-child(2) { background: #febc2e; }
.terminal-bar span:nth-child(3) { background: #28c840; }
.terminal-bar em {
  margin-left: auto; margin-right: auto; transform: translateX(-24px);
  font-style: normal; font-family: var(--font-mono); font-size: 12px; color: #7d8794;
}
.terminal-body {
  margin: 0; padding: 20px 22px 24px;
  font-family: var(--font-mono); font-size: 13.5px; line-height: 1.75;
  color: var(--term-text); white-space: pre-wrap; word-break: break-word;
  min-height: 300px;
}
.terminal-body .p { color: var(--term-prompt); }
.terminal-body .k { color: var(--term-key); }
.terminal-body .ok { color: var(--term-ok); }
.cursor {
  display: inline-block; width: 8px; height: 1.1em; vertical-align: text-bottom;
  background: var(--term-text); animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

/* ---------- Sections ---------- */
.section { padding-top: 72px; padding-bottom: 72px; scroll-margin-top: 64px; }
.section-head { margin-bottom: 40px; }
.section-kicker {
  font-family: var(--font-mono); font-size: 13px; color: var(--accent); margin-bottom: 10px;
}
.section h2 { font-size: clamp(28px, 3.4vw, 38px); font-weight: 700; }

/* Stats */
.stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.stat { background: var(--bg-elev); padding: 28px 26px; display: flex; flex-direction: column; gap: 8px; }
.stat-value {
  font-size: clamp(19px, 1.8vw, 22px); font-weight: 700; letter-spacing: -0.02em;
  color: var(--text);
}
.stat-value::before {
  content: ""; display: block; width: 28px; height: 3px; border-radius: 2px;
  background: var(--accent); margin-bottom: 14px;
}
.stat-label { color: var(--text-muted); font-size: 15px; line-height: 1.5; }

/* Timeline */
.timeline { position: relative; }
.role {
  display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 40px;
  padding: 32px 0; border-top: 1px solid var(--border);
}
.role:last-child { border-bottom: 1px solid var(--border); }
.role-meta { display: flex; flex-direction: column; gap: 4px; padding-top: 3px; }
.role-dates { font-family: var(--font-mono); font-size: 13px; color: var(--text); }
.role-place { font-size: 14px; color: var(--text-faint); }
.role h3 { font-size: 21px; font-weight: 700; }
.role .at { color: var(--accent); font-weight: 600; }
.role-context { color: var(--text-faint); font-size: 15px; margin-top: 6px; }
.role-body ul { margin-top: 16px; display: grid; gap: 10px; }
.role-body li {
  position: relative; padding-left: 22px; color: var(--text-muted); max-width: 72ch;
}
.role-body li::before {
  content: "›"; position: absolute; left: 4px; top: 0;
  font-family: var(--font-mono); color: var(--accent); font-weight: 500;
}

.timeline-subhead {
  margin: 56px 0 0; padding-bottom: 4px;
  font-family: var(--font-mono); font-size: 13px; font-weight: 500;
  color: var(--accent); letter-spacing: 0;
}
.timeline-subhead::before { content: "// "; color: var(--text-faint); }

/* Skills */
.skill-groups { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.skill-group {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px 24px;
}
.skill-group h3 {
  font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-faint); margin-bottom: 14px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: 14px; font-weight: 500; padding: 5px 12px; border-radius: 8px;
  background: var(--bg-sunk); border: 1px solid var(--border); color: var(--text);
}

/* About */
.about-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.about-card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px;
}
.about-card svg { width: 24px; height: 24px; color: var(--accent); margin-bottom: 16px; }
.about-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.about-card p { color: var(--text-muted); font-size: 15px; }
.education {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 16px;
  margin-top: 24px; padding: 18px 24px; border-radius: var(--radius);
  border: 1px dashed var(--border); color: var(--text-muted); font-size: 15px;
}
.education strong { color: var(--text); font-weight: 600; }
.edu-label { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }

/* Contact */
.contact-card {
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 20px;
  padding: clamp(28px, 5vw, 56px); box-shadow: var(--shadow);
}
.contact-card h2 { font-size: clamp(32px, 4.4vw, 48px); font-weight: 800; }
.contact-lead { color: var(--text-muted); font-size: 18px; margin-top: 14px; max-width: 52ch; }
.contact-links {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-top: 32px;
}
.contact-links a, .contact-static {
  display: flex; align-items: center; gap: 14px; height: 100%;
  padding: 16px 18px; border-radius: 12px; border: 1px solid var(--border); background: var(--bg);
  transition: border-color 0.15s, transform 0.15s;
  min-width: 0;
}
.contact-links a:hover { border-color: var(--accent); transform: translateY(-2px); }
.contact-links svg { width: 22px; height: 22px; color: var(--accent); }
.contact-links span { display: flex; flex-direction: column; font-weight: 600; font-size: 15px; min-width: 0; overflow-wrap: anywhere; }
.contact-links small { font-weight: 500; font-size: 12px; color: var(--text-faint); text-transform: uppercase; letter-spacing: 0.06em; }

/* Footer */
.site-footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
  padding-top: 32px; padding-bottom: 48px; color: var(--text-faint); font-size: 14px;
}
.site-footer .mono { font-size: 13px; }

/* Reveal on scroll (only when JS is running) */
.js .reveal { opacity: 0; transform: translateY(12px); transition: opacity 0.6s ease, transform 0.6s ease; }
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 56px; padding-bottom: 64px; }
  .lead { max-width: 60ch; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-links { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .nav-links { display: none; }
  .theme-toggle { margin-left: auto; }
  .role { grid-template-columns: 1fr; gap: 12px; }
  .role-meta { flex-direction: row; gap: 12px; flex-wrap: wrap; }
  .skill-groups { grid-template-columns: 1fr; }
  .section { padding-top: 56px; padding-bottom: 56px; }
  .terminal-body { font-size: 12.5px; padding: 16px; min-height: 0; }
  .terminal-bar em { transform: none; }
}

@media (max-width: 480px) {
  .stats, .about-grid, .contact-links { grid-template-columns: 1fr; }
  .btn { flex: 1 1 auto; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
}